CVE-2026-26180

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"product": "windows_server_2025", "vendor": "microsoft"}, {"configurations": [{"platform": ["x64-based_systems"], "status": "affected", "versions": {"scheme": "generic", "value": "[10.0.26100.0,10.0.26100.32690)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Windows Server 2025 (Server Core installation)", "source": "cna", "vendor": "Microsoft"}, "product": "windows_server_2025_(server_core_installation)", "vendor": "microsoft"}], "analysis": {"en": {"generated_at": "2026-04-14T19:31:05.196747+00:00", "value": {"mitigation_remediation": ["Apply the security update released by Microsoft for CVE\u20112026\u201126180 from the Microsoft Security Response Center.", "If the patch is not immediately available, enforce least\u2011privilege policies and restrict local administrative rights to reduce the attack surface.", "Keep the Windows operating system and all components up to date with the latest cumulative updates to prevent exploitation."], "summary": {"action": "Immediate Patch", "impact": "Local Privilege Escalation"}, "threat_synthesis": {"affected_systems": "Microsoft Windows 10 versions 1607, 1809, 21H2, and 22H2; Windows 11 releases 23H2, 24H2, 25H2, 22H3, and 26H1; Windows Server 2012, 2012\u202fR2, 2016, 2019, 2022, 2025, and 23H2, including Server\u202fCore installations.", "description_and_impact": "A heap\u2011based buffer overflow in the Windows kernel allows a user who already has local access to elevate privileges. This flaw arises from an uncontrolled memory write that can be triggered with crafted input, matching CWE\u2011122. The main impact is that the attacker can gain higher rights, potentially compromising confidentiality, integrity, or availability of the system.", "risk_and_exploitability": "The CVSS score of 7.8 indicates high severity. EPSS data is not available and the vulnerability is not listed in the CISA KEV catalog. The likely attack vector is local, requiring an authorized user with sufficient privileges to trigger the overflow. Successful exploitation allows the attacker to elevate privileges system\u2011wide, potentially leading to full system compromise."}}}}, "created": "2026-04-15T15:15:06.644173+00:00", "updated": "2026-04-15T21:00:09.675154+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$windows_10_1607", "microsoft$PRODUCT$windows_10_1809", "microsoft$PRODUCT$windows_10_21h2", "microsoft$PRODUCT$windows_10_22h2", "microsoft$PRODUCT$windows_11_22h3", "microsoft$PRODUCT$windows_11_23h2", "microsoft$PRODUCT$windows_11_24h2", "microsoft$PRODUCT$windows_11_25h2", "microsoft$PRODUCT$windows_11_26h1", "microsoft$PRODUCT$windows_server_2012", "microsoft$PRODUCT$windows_server_2012_(server_core_installation)", "microsoft$PRODUCT$windows_server_2012_r2", "microsoft$PRODUCT$windows_server_2012_r2_(server_core_installation)", "microsoft$PRODUCT$windows_server_2016", "microsoft$PRODUCT$windows_server_2016_(server_core_installation)", "microsoft$PRODUCT$windows_server_2019", "microsoft$PRODUCT$windows_server_2019_(server_core_installation)", "microsoft$PRODUCT$windows_server_2022", "microsoft$PRODUCT$windows_server_2022,_23h2_edition_(server_core_installation)", "microsoft$PRODUCT$windows_server_2025", "microsoft$PRODUCT$windows_server_2025_(server_core_installation)"]}